Expanding my ETF for more stability

I started at the last quarter of last year and started of with $VUSA (-0.32%) now this year i want to expand my ETF’S for more stability any advise ?

I was personally thinking to add these to my portfolio: $SPPW (-0.35%) or $IWDA (-0.37%) , $SPYI (-0.23%) , $VWRL (-0.4%)

any feedback is welcome